Reactions of electron-withdrawing thiophene 1,1-dioxides with furans. A novel reaction pathway
作者:A. M. Moiseev、E. S. Balenkova、V. G. Nenajdenko
DOI:10.1007/s11172-006-0318-8
日期:2006.4
Reactions of thiophenedioxides containing electron-withdrawing substituents with furans were studied. The reactions with unsubstituted furan followed the inverse-electron-demand Diels-Alder mechanism. Subsequent elimination of sulfur dioxide from the adduct afforded products of the tetrahydrobenzofuran series. The reactions with substituted furans gave benzylcarbonyl compounds in high yields. The